When selecting a tactile switch, attention should be paid to the size and type of electrical load. Due to the different types of tactile switches, the load-bearing capacity of the electrical load varies greatly. So when it comes to the use of tactile switches, it is important to be careful and cautious. If the switch is left unattended and exposes the wire core or allows water vapor to enter, it can cause a short circuit or an arc to occur when the switch is disconnected, resulting in a fire. So let's explain the manufacturing process and functional analysis of the tactile switch below.

Production process of tactile switch

Process 1: The primary operation for the touch switch is to first perform injection molding on the handle, base, and cover plate.

Process 2: When operating the internal device of the tactile switch, first place the spring, then apply the yellow film, followed by the black film, and finally cover the handle with the cover plate.

Process 3: Then fix the four pins of the tactile switch, which can be cut into pin type or patch type switches.

Process 4: After the above operations, the next step is to inspect the switch and check whether the quality index of all aspects is qualified. Then the packaging can be sealed according to the requirements.

Analysis of the Production Process of Light Touch Switch Component Data

The components that are lightly touched are all processed and installed through corresponding processes. Generally, the processing technology for the iron shell material is electroplating nickel or lightly touching process to avoid oxidation. The plastic handle material of its switch is generally POM material, which can effectively meet the requirements of fire resistance, flame retardancy, and high temperature resistance. However, the insulation substrate material of the switch is processed by stamping molding. The material of the touch chip is phosphor copper, and the processing technology is silver electroplating. In addition to the contacts, there are also movable parts in the switch that make the contacts conductive or non-conductive. Switches can be divided into sliding touch switches, light touch switches, etc. according to the different movable parts.

Analysis of the Function of Touch Switch

There are currently two types of differences in the functions of tactile switches, the first being the common type switch, and the other being the normally closed type switch. The commonly used switch is a normally open type, and the function of the normally open type refers to the circuit being generally disconnected. The first step is to lightly press the button handle to pull the spring piece and touch the base's firing point. At this time, the switch is considered to be conductive, and the button handle spring piece and contact will be released to separate them. At this time, the resistance of the two disconnected circuits of the switch is 30 milliohms. When the switch is conductive, the touch resistance O of the two circuits indicates that the switch function is very good. However, the normally closed type of tactile switch is relatively less commonly used. Since the normally closed type is normally conductive, when the switch is pulled, the circuit and function are disconnected. The functional resistance of this type of switch is opposite to that of the normally open type. Therefore, the normally closed type of general switches is not recommended for use.